Finding the Fourth Proportional to 107,351.80, 161,027.70 and 77,608.60
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Solution
The fourth proportional to 107,351.80, 161,027.70 and 77,608.60 is: 116,412.90
Step by Step Solution
- Step 1: Write the proportion equation
107,351.80 : 161,027.70 = 77,608.60 : x - Step 2: Convert to fraction form
107,351.80/161,027.70 = 77,608.60/x - Step 3: Cross multiply
107,351.80x = 161,027.70 × 77,608.60 - Step 4: Simplify right side
107,351.80x = 12,497,134,358.22 - Step 5: Solve for x
x = 12,497,134,358.22/107,351.80 - Step 6: Final answer
x = 116,412.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.